An instructor gives a test before and after a lesson with these results from randomly selected students. Before 54 61 56 41 38 57 42 After 70 56 64 56 39 47 62 B - A 1. Test the claim that the lesson is effective in increasing grades. 2. Was the intervention effective? Why or why not.
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Step 1
- Alternative Hypothesis (H1): The lesson increases grades, meaning the mean difference between the before and after scores is greater than 0. Step 2: Calculate the Differences Calculate the difference between the before and after scores for each student. Show more…
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